Features: High and Low Loft Ergonomic Design The latex pillow can effectively support the cervical spine during sleep and help relieve your neck pain. The lower side is suitable for people who are used to sleeping on their backs. The higher side is suitable for people who are used to sleeping on their sides. With its premium high-density natural latex material, this pillow fits well with the human body curve no matter what position you sleeping. Breathable & Comfortable:There are many holes inside the pillow which greatly promote the air flow and prevent heating. Cool during summer and comfortably warm during winter. Packing list: 1x latex pillow Maintenance and cleaning： Just remove the pillow cover to wash, put the latex pillow in a ventilated place, avoid direct sunlight, the pillow core can not be washed. Suggestions: 1. After opening the package, put the pillow in a ventilated place for 2-3 days. 2. The pillow is packed vacuum and can be restored to normal sizes after opening the package. 3. Natural rubber contains rubber proteins, has a natural fragrance and is harmless to the human body. 4. The measurement method is different, there will be an error of 1-2cm..